Omar Fink

1778 – Davy – bio

Humphry Davy was born in Cornwall, England, in 1778 and was known as a chemist. Davy used electric current from a voltaic pile to perform early forms of electrolysis and discovered sodium, potassium, barium, calcium, strontium and magnesium. He was the first to isolate barium and boron. He created the first electric arc lamp by […]

Bootstrap Resources in Space

Bootstrap Resources in Space

Since it is not practical to lift from Earth into space all of the construction materials necessary to build living structures (habitats), they must be extracted/mined from sources already existing in space. Stepping Stones: Economic Analysis of Space Transportation Supplied From NEO Resources ABSTRACT The Stepping Stones economic analysis of space transportation supplied from near-Earth […]

Time is Persistence

Understanding time is important because it’s a fundamental building block of the Universe. Most think the Universe is composed of matter, energy, space, and time. It also seems somewhat obvious that energy and matter are directly related, with matter seeming like slow energy or vice versa, energy is fast matter. String theory proposes that rolled […]

Measuring “Well Being”

We often measure the success of processes with numbers that represent some state of the output or operation of the process. Financial organizations tend to use a “bottom line” number of profitability. But nation-states and some other groups have different purposes and need different measures. When the purpose of a group is to sustain or […]

The Great Filter (Drake/Fermi)

The Drake Equation provides us a means to predict how likely it is that intelligent civilizations may exist. The L-Factor in the Drake Equation represents the length of an intelligent civilization. This is the most significant single factor in the equation. The L-Factor Limits Contact With ET Aliens The Length of a Civilization should be […]

Blockchains are the Foundation for Cyber Currencies

Most have heard of Bitcoin but don’t really understand it. Most have not heard of blockchains and yet, they are the underlying foundation of Bitcoin and other cyber coins. Cyber coins are virtual money tokens and intuitively seem unreliable because they are not backed up by anything similar to the gold standard. The gold standard […]

Cyber Currency – part 5/5 – Summary

SUMMARY A Market example: (our friendly neighborhood farmers market) Barter – direct exchange of goods works well at a small scale, but has limits Limited to a specific time and place No means for deferred payments Dividing some items is difficult or impossible No means for storing value Market example: we decide to create our […]

Cyber Currency – part 4/5 – Mining and Coins

MINING The purpose of mining Production of a cryptographic journal Time delay and proof of work that serves to prevent counterfeiting Currency expansion by creating new coin as mining rewards Process A request for a new block is issued There is a block calculation competition by miners After a competition has been won, the new […]

Cyber Currency – part 3/5 – Blockchain

Cyber Currency - part 3/5 - Blockchain

BLOCKCHAIN A digital ledger or journal of transactions (database) Cryptographic in nature (encrypted) A shared database with write permissions for everybody Validity of transactions is determined cryptographically instead of by a central authority Cryptographic nature Each transaction is combined with the hash value from the previous transaction and a new hash value is calculated Tamper […]

Cyber Currency – part 2/5 – Hashing Algorithms

Cyber Currency - part 2/5 - Hashing Algorithms

HASHING ALGORITHMS Hash = one way encryption Uses a mathematical formula (or algorithm) Maps data of variable size to a unique fixed length string Outputs a string called the “hash” or “digest” The same input always produces the same output It cannot be reversed (cryptographic) There are no collisions (no duplicates from different inputs) Hashing […]